YB/T 171 10 Special Shaped Steel Tubes, ASTM A500/A500M, 10, 20, 35, 45, Q345B, Shaped Steel Tube, Allotype Steel Pipes, Agricultre Drive Shaft Triangular Steel Tube, Agricultural Complete Pto Shaft Tubing, Agricultural Drive Shaft Steel Tube, Agriculture Tractor Pto Shaft Lemon Tube, Lemon tubing, Agriculture Pto Polygon Steel Tube, Oval Steel Tube, D shaped steel tube, plum blossom steel tube, club steel pipe, Arch shaped steel tube, Elliptical seamless steel tube, Hexagonal seamless cold drawn steel pipe, inner round Lemon Tubing Agriculture Pto Shaft Tube, Pto Shaft Star Tube, Star with round inner core steel tube, Transmission shaft seamless steel tube, 10, 20, 35, 45, Q345, ASTM A500/A500M Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes, SHS, RHS, CHS, Square Hollow Section, Rectangular Hollow Section, Circular Hollow Section, ASTM A500 Grade A, ASTM A500 Grade B, ASTM A500 Grade C, ASTM A500 Grade D

YB/T 171 Special Shaped Steel Tubes

Standard: YB/T 171
Equivalent Standards: ASTM A500/A500M

Material: 10
Equivalent Material: 1010, St35.8, P235TR1, P235TR2

Chemistry Composition

C, %	Si, %	Mn, %	P, %	S, %	Cr, %	Ni, %	Cu, %
0.07-0.13	0.17-0.37	0.35-0.65	0.025 max	0.025 max	0.15 max	0.30 max	0.25 max

Mechanical Properties

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %
335 min	205 min	24 min

Dimensions & Tolerance

Side Length (mm)	Tolerance
Side Length (mm)	Ordinary	Advanced
SL≤30mm	±0.30mm	±0.20mm
30mm＜SL≤50mm	±0.40mm	±0.30mm
50mm＜SL≤75mm	±0.80%	±0.70%
SL>75mm	±1%	±0.80%
Wall Thickness (mm)	Tolerance
Wall Thickness (mm)	Ordinary	Advanced
WT≤1mm	±0.18mm	±0.12mm
1mm＜WT≤3mm	+15%/-10%	+12.5%/-10%
WT>3mm	+12.5%/-10%	±10%

YB/T 171 specifies the classification, code, shape, order content, size, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of special shaped steel tubes with complex sections. YB/T 171 is suitable to the manufacture of special shaped steel tubes with complex sections made of carbon steel structural steel, high quality carbon structural steel and low-alloy high-strength structural steel for structural uses.
YB/T 171规定了复杂断面异型钢管的分类、代号、形状、订货内容、尺寸、技术要求、试验方法、检验规则、包装、标志和质量证明书。YB/T 171适用于碳素结构钢、优质碳素结构钢和低合金高强度结构钢制成的结构用复杂断面异型钢管。

Manufacture: tubes to GB/T 3094 shall be manufactured by seamlesss process.
Delivery Condition: tubes should be delivered under cold finished condition, with purchaser agreement, it can also be with heat treated.
Inspection & Test: chemistry composition analysis, tensile test, surface inspection and dimension check.

Keyword: GB/T 3094, Shaped Steel Tubes, Cross-section Shaped

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